Dust-guard for axle-boxes



(No Model.)

7 J. TIMMS. I

DUST GUARD FOR AXLE BOXES.

No; 498,369. Patented May 30, 1893.

UNITED STATES PATENT OFFICE.

JAMES TIMMS, OF COLUMBUS, OHIO;

DUST-GUARD FOR AXLE-BOXES.

SPECIFICATION forming part of Letters Patent No. 498,369, dated May 30, 1893.

Application filed December 3 1892. $erial No. 454,00 2- (No model.)

To all whom it may concern:

Be it known that I, JAMES TIMMS, a residen of Columbus, in the county of Franklin and State of Ohio, have invented certain new and useful ImprovementsinDust-Guards forAxle- Boxes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use J the axle box and the escape of oil from the latter effectually prevented.

A further object is to construct a dust guard in such manner that when it becomes worn, the defective part can be removed and replaced by another without the necessity of removing the box from the truck frame.

A further object is to provide a dust guard with simple and efficient means for maintaining the parts thereof in proper relation to the axle.

With these objects in view the invention consists in certain novel features of construction and combinations and arrangements of parts as hereinafter set forth and pointed out in the claims.

In the accompanying drawings: Figure 1 is a perspective view illustrating my invention. Fig. 2 is a cross section of the same. Fig. 3 is a view of a modification. Fig. 4 is a cross section of same.

A represents my improved dust guard and comprises a stationary part B and a movable part 0. The stationary part B is made with two parallel arms a, a connected bya curved bearing badapted to receive and partially embrace the axle and preferably located beneath. the same. The inner edge of each arm a is made with a groove or recess a, which extends from the upper end of each arm to the curved bearing 1). Inserted in the upper portions of the grooves or recesses c are arms 11 of springs D, the lower ends of said armsbeing bent laterally to produce projections ewhich enter sockets or perforations e in said arms a. Above the arms a, the springs D are bent to produce coils f, and their free ends extended toward each other for a purpose which will be presently explained.

After the arms dot the springs D shall have been inserted in the grooves or recesses c as above explained, tongues g are secured in said grooves or recesses and project inwardly therefrom, said tongues extending from the upper ends of the arms a to the bearing b and at their lower ends are curved concentrically with said hearing.

The tongues g may be either of Wood or metal as desired. Located 1 between the arms ctof the stationaryportion B ofthe guard is the movable portion 0 therewith an upwardly projecting arm 2' having a recess t" in its upper end for the reception of the inwardly projecting portions of the spring D. By this construction and arrangement of parts it will be seen that the movable part 0 of the guard will be maintained normally in contact with the axle without interfering with the necessary movements of the latter. In order that the movable part 0 shall be capable of having a free vertical movement be tween the arms a, it is of course necessary that the edges of the movable part 0 shall not bind or fit tight against said arms a and consequently there will be a slight space between the edgesof said movable part 0 and the arms a. Now it will be seen that by the provision of the tongues garranged as above described, said tongues not only serve as guides for the movable part 0 but also serveto effectually close the space between the edges of said movable part and the arms a and thus prevent the passage of dust between the part 0 and the arms a and also the escape of oil through said spaces.

In constructing both parts of the guard I prefer to make the inner face flat, and inclined in opposite directions on the outer face as most clearly shown in Fig. 2. By this angular construction the device is adapted to wipe the oil inward upon the axle and cause it to drop down into the oil box, thus preventing it from working outward and wastin By constructing and arranging a dust guard as above explained it will be seen that when it become worn the injured part can be readily removed and replaced by another without the necessity of removing the box from the truck frame.

In Fig. 3 the guard is shown as made flat on its outer face. By thus constructing the device it can be used with axle boxes now in use.

The dust guard above described is very simple in construction, easily applied or removed and is efiectual in the'performance of its functions.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is:-

1. In a dust guard, the combination with a stationary part having two parallel arms, and a curved bearing, of a movable part having a curved bearing,adapted to slide between said arms, an arm projecting from said movable part and having a recess in its free end,

and springs secured at one end to the arms; of the stationary part and adapted at their.

free ends to enter the recess in the arm of the movable part, substantially as set forth.

2. In a dust guard, the combination with a stationary part having a curved bearing and parallel arms having grooves or recesses therein, of springs having arms secured in said grooves or recesses, the free ends of said springs projecting toward each other, tongues also secured in the said grooves, a movable part having a curved bearing at one end and grooves in its edges for the reception of said tongues, and an arm projecting from said or perforations, a movable part located between said parallel arms of the stationary part and having grooves for the reception of said tongues, and an arm projecting from said movable part and having a recess for the reception of the free ends of said springs, substantially as set forth.

4. In a dust, guard, the combinationwith a stationary part having a curved bearing and two parallel arms, of a movable part adapted to have a sliding movementbetween said arms and havinga curved bearing at one end, an arm projecting from the other endlof-said movable part and having a recess: therein,

and aspring secured to the free end of each arm of the stationary part, each ofsaid springs being coiled at a point between its ends the free ends of said springs. projecting toward each other and adapted to bear on. the end of the arm of the movable part in the recess therein, substantially as set forth.

In testimony whereof I have signed this specification in the presence of two subscribing witnesses.

JAMES TIMMS.

Witnesse C. S. DRURY, R. S. FERGUSON. 

